暗記メーカー

暗記メーカー

​
ログイン
ELECTRICAL 8
100問 • 1年前
  • Gaviola Jayson, Alab
    • 通報

    問題一覧

  • 1

    minimum height of a a service drop conductors above a drive way is ___mm

    3700

  • 2

    based on the pdc which of the following interruption events is included in the calculation of distribution utility reliability indices

    outages on 34.5 kV lines

  • 3

    Which of the following is not a standard classification for a branch circuit supplying several loads

    25

  • 4

    is known also as cold standby reserve

    back-up reserve

  • 5

    the commonly used light sensor in a modern fax machine is the

    charge couple-device

  • 6

    the correct word to define wiring which is not concealed is

    exposed

  • 7

    when luminaires direct 90 to 100% of their output upward is considered a

    indirect lighting

  • 8

    the primary function of a fuse is to

    prevent excessive currents

  • 9

    a type of electronics communication in which only one party transmits at a time

    half duplex

  • 10

    the commonly used light sensor in a modern fax machine is

    charge couple device

  • 11

    which of the following cannot have a single unit of 100 MW

    Diesel Power Plant

  • 12

    A/an ____relay that operates or pick-up when it's current exceeds a pre determined value

    over-current

  • 13

    _____ are auxiliary transformers used for metering or operation of auxiliary equipment and relays

    current transformers

  • 14

    an electrical outlet constructed so that the moisture will not enter the enclosure is classified as being

    water tight

  • 15

    which of the following common electronic components is not found in IC

    Inductors

  • 16

    what is the maximum number of bends permitted in rigid conduits between outlets

    4 quarter bends

  • 17

    current reactors are used to

    bring down the fault level within the capacity

  • 18

    heating effect of current has undesirable effect is

    vacuum cleaner

  • 19

    the minimum size of copper conductor for a 230 volt general elimination branch circuit in a dwelling is ____mm²

    2.0

  • 20

    overcurrent protection response to

    increase in current above the pick-up value

  • 21

    if the dc current is reversed in the control winding of a saturable reactor

    same ac current will flow

  • 22

    the overcurrent protective device is caused to operate by

    current flow

  • 23

    luminaire types permitted in clothes closets

    surface mounted or receased incandescent fixture with a completely enclosed lamp

  • 24

    when electrons build up pressure at one point it is called

    current flow

  • 25

    fermi energy is the amount of energy which

    must be given to an electron to move it to conduction band

  • 26

    a gang capacitor is a variable capacitor in which capacitance is varied by changing the

    plate area

  • 27

    which of these is not an objective of grid planning

    timing

  • 28

    in the differential current protection system the current transformer secondary is a wide delta power transformers will be in

    delta-wye

  • 29

    the amount of frequency deviation from the carrier center of frequency in an fm transmitter is proportional to the

    amplitude

  • 30

    __ time is the total time it takes a fuse to interrupt a secret at a certain fault current level

    total clearing time

  • 31

    the varmeter in conjunction with other meter device can be used to deterthe _____factor

    power

  • 32

    The device the automatically trips and recloses a preset number of times to clear temporary faults or isolate permanent faults

    circuit recloser

  • 33

    An electromagnetic device used for finding short circuited coil is called an

    growler

  • 34

    Dwelling receptacles located ____m above floors are not counted in the required number of receptacles along the wall

    1.6

  • 35

    The branch circuit conductors for a resistance heater and motor unit must be rated at what percent of the load

    125% of the total load

  • 36

    What is the maximum output power of a cellular transmitter

    3 watts

  • 37

    A plate electrode must expose not less than ___ sq.m of surface to the soil

    1/5

  • 38

    Which of the following is not a type of the contactor for circuit breakers

    vacuum

  • 39

    A fuse is a ____device

    1 phase thermal

  • 40

    Which of this is not a factor in the selection of fuse rating for protection of a branch circuit

    system impedance

  • 41

    A ___ is an electrical device that prevents an electrocution caused by an accident or equipment malfunction

    gfci

  • 42

    If the reverse bias voltage of PN junction is increased within the limits the reverse saturation current will

    remain unaffected

  • 43

    When a current carrying conductor is brought into magnetic field the force that moves the conductor depends upon the

    the value of current

  • 44

    What is the peak factor of triangular wave

    1.73

  • 45

    A series motor designed to operate on DC or ac

    universal motor

  • 46

    The material which is not a semi-conductor is

    silica

  • 47

    An instrument having a voltage coil and current coil would be s

    wattemeter

  • 48

    The function of the saturable reactor is to provide variable inductance which can be increased by

    decreasing the current in the DC winding

  • 49

    When extra stop buttons are added to an existing starter control circuit they must be

    series with the contactor coil

  • 50

    A freshly paint layer may be dried electronically by ____ heating

    dielectric

  • 51

    Branch Circuit larger than ____amperes shall only supply no lighting load

    50

  • 52

    The calculation of the reliability standard indices of the grid owners as set by PGC shall include outages that occur

    on the transmission line

  • 53

    The equipment grounding conductor is required to be in the same metal enclosure as the circuit conductor to protect against

    induced current in metal enclosure

  • 54

    The equipment grounding conductor is required to be in the same metal enclosure as the circuit conductor to protect against

    induced current in metal enclosure

  • 55

    What contains in each cell site of cellular telephone system

    repeater

  • 56

    The lighting load for a dwelling expressed in terms of a unit load in volt amperes per square meter must be at least

    24

  • 57

    The power generated by some steam power plants drops in the summer because

    the lake temperature increases

  • 58

    An emf induced in a coil due to a change in current in a neighboring coil is known as __emf

    mutually induced

  • 59

    If a dielectric is placed in an electric field the field strength

    decreases

  • 60

    For eliminating 7th harmonic from the emf wave of an alternator the fractional pitch must be

    6/7

  • 61

    A fully charged lead acid cell has an open circuit voltage about ___volts

    2.2

  • 62

    What will happen to an insulating medium if subjected to a voltage more than the basic impulse insulation level

    get punctured

  • 63

    Sparking occurs when a load is switched off because the circuit has high

    inductance

  • 64

    The highest speed attained by a DC shunt motor is

    equal to no load speed at rated flux

  • 65

    The main contacts of a circuit breaker are most likely to be operated by a

    heavy duty switch

  • 66

    A relay is used to

    relay a message to a remote place

  • 67

    Rapid stopping of a motor by momentarily connecting the motor in reverse direction is called

    plugging

  • 68

    Which DC motor cannot be used without a load connected to it

    series

  • 69

    When the sole purpose of ac is to produce heat the selection of conductor is based on __ value of the current

    rms

  • 70

    What is the type of of relay that is intended to respond to the difference between incoming and outgoing electrical quantities

    differential

  • 71

    Which of these is not a factor in determining the speed of a DC motor

    the thickness of the commutator bars

  • 72

    Which of the following statements is correct

    the resistance of conductor is the hindrance by which the conductor opposes the flow of the current

  • 73

    ___ is used to prevent motorizing of the generator

    graphite

  • 74

    Which one does not belong to the technical performance standards of Philippine Distribution Code

    Collection efficiency

  • 75

    Which of the following shall be induced in the calculation of reliability standard indices of the distributor asset by the PDC

    outages that occur on the primary lines of the distribution system

  • 76

    The resistance of a conductor increases when

    its length increases

  • 77

    Receptacles outlet in a dwelling unit must be installed in habitable rooms so that no point along the floor line is farther from an outlet___mm

    1800

  • 78

    The specific resistance depends upon

    the nature of the material of the conductor only

  • 79

    Which of the following is not a consideration in surge arrester

    insulation coordination

  • 80

    Diesel power plant is bet suited as

    standby

  • 81

    A___device that carry and interrupt load current even in case of a fault by used of separate contacts

    circuit breaker

  • 82

    Which is not a purpose of performance standards for distribution of PDC

    to facilitate the monitoring of compliance with the distribution code at the operation level

  • 83

    Which is not a source of noise in a communication system

    manufactured electrical equipment

  • 84

    A receptacle outlet is required above a show window every___linear meters

    3

  • 85

    The electric motor generally used in household food mixers

    universal

  • 86

    What do you call the interior lighting where the roof trusses or celling height is greater than 7.6m above floor level?

    High mast

  • 87

    An ampere is how many abampere?

    0.1

  • 88

    The rapid failure caused by the heat of an arc on the conductor surface accompanied by the heating effect of short circuit

    fault current burndown

  • 89

    What is the purpose of air blowers in substation transformer

    to increase the capacity

  • 90

    Which is the safest type of insulation for indoor wiring installation specially residential and commercial buildings

    ethylene propylene rubber

  • 91

    Name the throw away protection device

    fuse

  • 92

    Who developed the wireless transmission in 1897

    Henrich Hertz

  • 93

    what effect or principle those of a microphone operates

    piezoelectric

  • 94

    What would happen if you connect a transformer to a DC circuit with a voltage of 20% of nameplate ratings after a steady state condition is reached

    no voltage is registered at secondary

  • 95

    For indoor lawn tennis what is the recommended level of illumination for tournaments in foot-candles

    50

  • 96

    Name the voltage class when the nominal voltage range is 120-600volts

    low-voltage

  • 97

    Where else the third wire in the service conductor terminated aside from the S/N of the panel board

    ground rod

  • 98

    The unit measure of sound level is

    decibel

  • 99

    An instrument applied to a simple structural member to measure the stretch or extension in a certain direction over a definite distance called the gauge length is

    strain gauge

  • 100

    Magnetic induction can be expressed equally well except one of the following

    magnetic field

    • ELECTRICAL 1

    ELECTRICAL 1

    Gaviola Jayson, Alab · 100問 · 2年前

    ELECTRICAL 1

    ELECTRICAL 1

    100問 • 2年前
    Gaviola Jayson, Alab

    ELECTRICAL 2

    ELECTRICAL 2

    Gaviola Jayson, Alab · 100問 · 1年前

    ELECTRICAL 2

    ELECTRICAL 2

    100問 • 1年前
    Gaviola Jayson, Alab

    ELECTRICAL 3

    ELECTRICAL 3

    Gaviola Jayson, Alab · 100問 · 1年前

    ELECTRICAL 3

    ELECTRICAL 3

    100問 • 1年前
    Gaviola Jayson, Alab

    ELECTRICAL 4

    ELECTRICAL 4

    Gaviola Jayson, Alab · 100問 · 1年前

    ELECTRICAL 4

    ELECTRICAL 4

    100問 • 1年前
    Gaviola Jayson, Alab

    ELECTRICAL 5

    ELECTRICAL 5

    Gaviola Jayson, Alab · 100問 · 1年前

    ELECTRICAL 5

    ELECTRICAL 5

    100問 • 1年前
    Gaviola Jayson, Alab

    ELECTRICAL 6

    ELECTRICAL 6

    Gaviola Jayson, Alab · 101問 · 1年前

    ELECTRICAL 6

    ELECTRICAL 6

    101問 • 1年前
    Gaviola Jayson, Alab

    ELECTRICAL 7

    ELECTRICAL 7

    Gaviola Jayson, Alab · 100問 · 1年前

    ELECTRICAL 7

    ELECTRICAL 7

    100問 • 1年前
    Gaviola Jayson, Alab

    ELECTRICAL 9

    ELECTRICAL 9

    Gaviola Jayson, Alab · 100問 · 1年前

    ELECTRICAL 9

    ELECTRICAL 9

    100問 • 1年前
    Gaviola Jayson, Alab

    ELECTRICAL 10 NEW

    ELECTRICAL 10 NEW

    Gaviola Jayson, Alab · 64問 · 1年前

    ELECTRICAL 10 NEW

    ELECTRICAL 10 NEW

    64問 • 1年前
    Gaviola Jayson, Alab

    SCIENCE 1

    SCIENCE 1

    Gaviola Jayson, Alab · 101問 · 1年前

    SCIENCE 1

    SCIENCE 1

    101問 • 1年前
    Gaviola Jayson, Alab

    SCIENCE 2

    SCIENCE 2

    Gaviola Jayson, Alab · 100問 · 1年前

    SCIENCE 2

    SCIENCE 2

    100問 • 1年前
    Gaviola Jayson, Alab

    SCIENCE 3

    SCIENCE 3

    Gaviola Jayson, Alab · 93問 · 1年前

    SCIENCE 3

    SCIENCE 3

    93問 • 1年前
    Gaviola Jayson, Alab

    SCIENCE 4

    SCIENCE 4

    Gaviola Jayson, Alab · 100問 · 1年前

    SCIENCE 4

    SCIENCE 4

    100問 • 1年前
    Gaviola Jayson, Alab

    SCIENCE 5

    SCIENCE 5

    Gaviola Jayson, Alab · 100問 · 1年前

    SCIENCE 5

    SCIENCE 5

    100問 • 1年前
    Gaviola Jayson, Alab

    SCIENCE 6

    SCIENCE 6

    Gaviola Jayson, Alab · 100問 · 1年前

    SCIENCE 6

    SCIENCE 6

    100問 • 1年前
    Gaviola Jayson, Alab

    SCIENCE 7

    SCIENCE 7

    Gaviola Jayson, Alab · 100問 · 1年前

    SCIENCE 7

    SCIENCE 7

    100問 • 1年前
    Gaviola Jayson, Alab

    SCIENCE 8

    SCIENCE 8

    Gaviola Jayson, Alab · 100問 · 1年前

    SCIENCE 8

    SCIENCE 8

    100問 • 1年前
    Gaviola Jayson, Alab

    SCIENCE 9

    SCIENCE 9

    Gaviola Jayson, Alab · 100問 · 1年前

    SCIENCE 9

    SCIENCE 9

    100問 • 1年前
    Gaviola Jayson, Alab

    SCIENCE 10

    SCIENCE 10

    Gaviola Jayson, Alab · 100問 · 1年前

    SCIENCE 10

    SCIENCE 10

    100問 • 1年前
    Gaviola Jayson, Alab

    問題一覧

  • 1

    minimum height of a a service drop conductors above a drive way is ___mm

    3700

  • 2

    based on the pdc which of the following interruption events is included in the calculation of distribution utility reliability indices

    outages on 34.5 kV lines

  • 3

    Which of the following is not a standard classification for a branch circuit supplying several loads

    25

  • 4

    is known also as cold standby reserve

    back-up reserve

  • 5

    the commonly used light sensor in a modern fax machine is the

    charge couple-device

  • 6

    the correct word to define wiring which is not concealed is

    exposed

  • 7

    when luminaires direct 90 to 100% of their output upward is considered a

    indirect lighting

  • 8

    the primary function of a fuse is to

    prevent excessive currents

  • 9

    a type of electronics communication in which only one party transmits at a time

    half duplex

  • 10

    the commonly used light sensor in a modern fax machine is

    charge couple device

  • 11

    which of the following cannot have a single unit of 100 MW

    Diesel Power Plant

  • 12

    A/an ____relay that operates or pick-up when it's current exceeds a pre determined value

    over-current

  • 13

    _____ are auxiliary transformers used for metering or operation of auxiliary equipment and relays

    current transformers

  • 14

    an electrical outlet constructed so that the moisture will not enter the enclosure is classified as being

    water tight

  • 15

    which of the following common electronic components is not found in IC

    Inductors

  • 16

    what is the maximum number of bends permitted in rigid conduits between outlets

    4 quarter bends

  • 17

    current reactors are used to

    bring down the fault level within the capacity

  • 18

    heating effect of current has undesirable effect is

    vacuum cleaner

  • 19

    the minimum size of copper conductor for a 230 volt general elimination branch circuit in a dwelling is ____mm²

    2.0

  • 20

    overcurrent protection response to

    increase in current above the pick-up value

  • 21

    if the dc current is reversed in the control winding of a saturable reactor

    same ac current will flow

  • 22

    the overcurrent protective device is caused to operate by

    current flow

  • 23

    luminaire types permitted in clothes closets

    surface mounted or receased incandescent fixture with a completely enclosed lamp

  • 24

    when electrons build up pressure at one point it is called

    current flow

  • 25

    fermi energy is the amount of energy which

    must be given to an electron to move it to conduction band

  • 26

    a gang capacitor is a variable capacitor in which capacitance is varied by changing the

    plate area

  • 27

    which of these is not an objective of grid planning

    timing

  • 28

    in the differential current protection system the current transformer secondary is a wide delta power transformers will be in

    delta-wye

  • 29

    the amount of frequency deviation from the carrier center of frequency in an fm transmitter is proportional to the

    amplitude

  • 30

    __ time is the total time it takes a fuse to interrupt a secret at a certain fault current level

    total clearing time

  • 31

    the varmeter in conjunction with other meter device can be used to deterthe _____factor

    power

  • 32

    The device the automatically trips and recloses a preset number of times to clear temporary faults or isolate permanent faults

    circuit recloser

  • 33

    An electromagnetic device used for finding short circuited coil is called an

    growler

  • 34

    Dwelling receptacles located ____m above floors are not counted in the required number of receptacles along the wall

    1.6

  • 35

    The branch circuit conductors for a resistance heater and motor unit must be rated at what percent of the load

    125% of the total load

  • 36

    What is the maximum output power of a cellular transmitter

    3 watts

  • 37

    A plate electrode must expose not less than ___ sq.m of surface to the soil

    1/5

  • 38

    Which of the following is not a type of the contactor for circuit breakers

    vacuum

  • 39

    A fuse is a ____device

    1 phase thermal

  • 40

    Which of this is not a factor in the selection of fuse rating for protection of a branch circuit

    system impedance

  • 41

    A ___ is an electrical device that prevents an electrocution caused by an accident or equipment malfunction

    gfci

  • 42

    If the reverse bias voltage of PN junction is increased within the limits the reverse saturation current will

    remain unaffected

  • 43

    When a current carrying conductor is brought into magnetic field the force that moves the conductor depends upon the

    the value of current

  • 44

    What is the peak factor of triangular wave

    1.73

  • 45

    A series motor designed to operate on DC or ac

    universal motor

  • 46

    The material which is not a semi-conductor is

    silica

  • 47

    An instrument having a voltage coil and current coil would be s

    wattemeter

  • 48

    The function of the saturable reactor is to provide variable inductance which can be increased by

    decreasing the current in the DC winding

  • 49

    When extra stop buttons are added to an existing starter control circuit they must be

    series with the contactor coil

  • 50

    A freshly paint layer may be dried electronically by ____ heating

    dielectric

  • 51

    Branch Circuit larger than ____amperes shall only supply no lighting load

    50

  • 52

    The calculation of the reliability standard indices of the grid owners as set by PGC shall include outages that occur

    on the transmission line

  • 53

    The equipment grounding conductor is required to be in the same metal enclosure as the circuit conductor to protect against

    induced current in metal enclosure

  • 54

    The equipment grounding conductor is required to be in the same metal enclosure as the circuit conductor to protect against

    induced current in metal enclosure

  • 55

    What contains in each cell site of cellular telephone system

    repeater

  • 56

    The lighting load for a dwelling expressed in terms of a unit load in volt amperes per square meter must be at least

    24

  • 57

    The power generated by some steam power plants drops in the summer because

    the lake temperature increases

  • 58

    An emf induced in a coil due to a change in current in a neighboring coil is known as __emf

    mutually induced

  • 59

    If a dielectric is placed in an electric field the field strength

    decreases

  • 60

    For eliminating 7th harmonic from the emf wave of an alternator the fractional pitch must be

    6/7

  • 61

    A fully charged lead acid cell has an open circuit voltage about ___volts

    2.2

  • 62

    What will happen to an insulating medium if subjected to a voltage more than the basic impulse insulation level

    get punctured

  • 63

    Sparking occurs when a load is switched off because the circuit has high

    inductance

  • 64

    The highest speed attained by a DC shunt motor is

    equal to no load speed at rated flux

  • 65

    The main contacts of a circuit breaker are most likely to be operated by a

    heavy duty switch

  • 66

    A relay is used to

    relay a message to a remote place

  • 67

    Rapid stopping of a motor by momentarily connecting the motor in reverse direction is called

    plugging

  • 68

    Which DC motor cannot be used without a load connected to it

    series

  • 69

    When the sole purpose of ac is to produce heat the selection of conductor is based on __ value of the current

    rms

  • 70

    What is the type of of relay that is intended to respond to the difference between incoming and outgoing electrical quantities

    differential

  • 71

    Which of these is not a factor in determining the speed of a DC motor

    the thickness of the commutator bars

  • 72

    Which of the following statements is correct

    the resistance of conductor is the hindrance by which the conductor opposes the flow of the current

  • 73

    ___ is used to prevent motorizing of the generator

    graphite

  • 74

    Which one does not belong to the technical performance standards of Philippine Distribution Code

    Collection efficiency

  • 75

    Which of the following shall be induced in the calculation of reliability standard indices of the distributor asset by the PDC

    outages that occur on the primary lines of the distribution system

  • 76

    The resistance of a conductor increases when

    its length increases

  • 77

    Receptacles outlet in a dwelling unit must be installed in habitable rooms so that no point along the floor line is farther from an outlet___mm

    1800

  • 78

    The specific resistance depends upon

    the nature of the material of the conductor only

  • 79

    Which of the following is not a consideration in surge arrester

    insulation coordination

  • 80

    Diesel power plant is bet suited as

    standby

  • 81

    A___device that carry and interrupt load current even in case of a fault by used of separate contacts

    circuit breaker

  • 82

    Which is not a purpose of performance standards for distribution of PDC

    to facilitate the monitoring of compliance with the distribution code at the operation level

  • 83

    Which is not a source of noise in a communication system

    manufactured electrical equipment

  • 84

    A receptacle outlet is required above a show window every___linear meters

    3

  • 85

    The electric motor generally used in household food mixers

    universal

  • 86

    What do you call the interior lighting where the roof trusses or celling height is greater than 7.6m above floor level?

    High mast

  • 87

    An ampere is how many abampere?

    0.1

  • 88

    The rapid failure caused by the heat of an arc on the conductor surface accompanied by the heating effect of short circuit

    fault current burndown

  • 89

    What is the purpose of air blowers in substation transformer

    to increase the capacity

  • 90

    Which is the safest type of insulation for indoor wiring installation specially residential and commercial buildings

    ethylene propylene rubber

  • 91

    Name the throw away protection device

    fuse

  • 92

    Who developed the wireless transmission in 1897

    Henrich Hertz

  • 93

    what effect or principle those of a microphone operates

    piezoelectric

  • 94

    What would happen if you connect a transformer to a DC circuit with a voltage of 20% of nameplate ratings after a steady state condition is reached

    no voltage is registered at secondary

  • 95

    For indoor lawn tennis what is the recommended level of illumination for tournaments in foot-candles

    50

  • 96

    Name the voltage class when the nominal voltage range is 120-600volts

    low-voltage

  • 97

    Where else the third wire in the service conductor terminated aside from the S/N of the panel board

    ground rod

  • 98

    The unit measure of sound level is

    decibel

  • 99

    An instrument applied to a simple structural member to measure the stretch or extension in a certain direction over a definite distance called the gauge length is

    strain gauge

  • 100

    Magnetic induction can be expressed equally well except one of the following

    magnetic field